Look dude, from my experience, having that happen (him confessing) isn't gonna hurt your relationship much if you're willing to look past it. If he's really into you, he's been like that for a while, and if he does in fact confess, he'd have already went through with what he would do in both situations where you return his feelings or deny them. He'll be chill whatever you pick.

If he confesses to you, if you confess to him, then it's a different story, I don't even know if the guys actually likes you like that.

But ****, what do I know, I don't even know if my friend is like that, he's a weird ass mofo and he's the only person that I could never read what he's thinking.

At first, people must've interpreted you as being an ass.
And then, in the second comment of yours, you kinda were.
And then, it seemed that you mocked, rather than trying to be witty, since the established mood was pretty sour.

FunnyJunk hates that, and usually steamrolls stuff they interpret as negative, with red thumbs.